precautions while using laboratory thermometers

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Resistance thermometer

Precautions while using Laboratory Thermometers

The precautions to be observed while reading a laboratory thermometer.
Resistance thermometer

Inthistypeofthermometerthechangeinresistanceofconductorsorsemiconductorswithtemperaturechangeisusedtomeasuretemperature.Usually,thetemperaturesensitiveresistanceelementisincorporatedinabridgenetworkwhichhasareasonablyconstantpowersupply.Althoughadeflectioncircuitisoccasionallyused,almostallinstrumentsofthisclassuseanullbalancesystem,inwhichtheresistancechangeisbalancedandmeasuredbyadjustingatleastoneotherresistanceinthebridge.Metalscommonlyusedasthesensitiveelementinresistancethermometersareplatinum,nickel,andcopper.


Thermometer Safety
Turn the thermometer on and make sure the reading is at zero
Considerations
HowLaboratory Thermometers work
Discard the plastic cover and put a new one on
Mercury Spill Cleanup
Bimetallic stripthermometers
Selection Criteria for Laboratory Thermometers
Bimetallic thermometer
Alcohal thermometers
Types
Liquid in glassthermometers
More ...

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